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Single Family ResidenceResidential
$681,819$363 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 97How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Aug 30, 2026
Last sold for $389,000 on Aug 31, 2006

523 UNION AVE NE

RENTON, WA 98059
3
Beds
2
Baths
1,880 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.25 ac
Lot SizeThe size of the land the home sits on, from county records.
1999
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
2
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$682K
$660K low$703K high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$389,000 · Aug 31, 2006

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$1,025 (2026)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$724,000 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$338,000
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$386,000
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$702,000
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$724,000

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
StyleThe architectural style of the home, such as ranch or colonial.Triplex
CountyKING
Lot (acres)The size of the land the home sits on, from county records.0.25
HeatingThe type of heating system in the home.Heat Pump
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Porch · 70 ft²

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
Honey Dew Elementary SchoolC-
Elementary · Grades KG–5 · 0.4 mi
H
Hazen High SchoolB-
High · Grades 9–12 · 1.0 mi
M
Ridson Middle SchoolB+
Middle · Grades 6–8 · 3.6 mi

District: Renton School District

Neighborhood · ZIP 98059These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.52
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.113
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.270

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.32%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.4.1%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.42,159
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,108 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$141,350
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$174,825
Average tempThe average temperature here across a full year.50°F
Annual precipHow much rain and melted snow falls here in a typical year.50 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.43%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

523 Union Ave Ne measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 78% of homes in Renton 98059
  • Costs less per square foot than 85% of homes in Renton 98059
  • Has a bigger lot than 75% of homes in East Renton Highlands
  • Newer than 76% of homes in King County

What homes are worth in Renton 98059

Each bar is how many homes fall in that price range. The marker is this home.

This home
$351K$2.4M

This home is worth more than 22% of homes in Renton 98059.

How it measures up in Renton 98059

The dot is this home. The mark in the middle is the typical home in Renton 98059.

Estimated value$681,819
CheaperTypical $913,861Pricier

Pricier than 22% of homes nearby

Price per ft²$363
CheaperTypical $441Pricier

Pricier than 15% of homes nearby

Living area1,880 ft²
SmallerTypical 2,220 ft²Bigger

Bigger than 37% of homes nearby

Lot size0.25 ac
SmallerTypical 0.24 acBigger

Bigger than 55% of homes nearby

Year built1999
OlderTypical 1991Newer

Newer than 60% of homes nearby

How 523 Union Ave Ne ranks against every home in each area.
MeasureThis homeEast Renton HighlandsRenton 98059King County
Estimated valuepricier than$681,81947% of homes22% of homes35% of homes
Price per ft²pricier than$36322% of homes15% of homes21% of homes
Living areabigger than1,880 ft²55% of homes37% of homes51% of homes
Lot sizebigger than0.25 ac75% of homes55% of homes63% of homes
Year builtnewer than199969% of homes60% of homes76% of homes

About 523 Union Ave Ne

How much is 523 Union Ave Ne, Renton, WA worth?

The TopHap Estimate for 523 Union Ave Ne, Renton, WA is $681,819 as of Aug 30, 2026. The likely range is $660,396 to $703,242. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 523 Union Ave Ne, Renton, WA last sell?

523 Union Ave Ne, Renton, WA last sold on Aug 31, 2006 for $389,000, according to the county's recorded deed. TopHap holds 2 recorded sales for this parcel.

How big is 523 Union Ave Ne, Renton, WA?

523 Union Ave Ne, Renton, WA has 3 bedrooms, 2 bathrooms, 1,880 square feet of living space and a 0.25-acre lot.

When was 523 Union Ave Ne, Renton, WA built?

523 Union Ave Ne, Renton, WA was built in 1999, making it 27 years old. It is a triplex home. The building has 1 story.

What schools serve 523 Union Ave Ne, Renton, WA?

523 Union Ave Ne, Renton, WA is assigned to Honey Dew Elementary School (elementary), rated C-; Hazen High School (high), rated B-; Ridson Middle School (middle), rated B+. All sit in Renton School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 523 Union Ave Ne, Renton, WA compare to other homes in Renton 98059?

Among the 12,456 homes in Renton 98059, it is worth more than 22% of them ($681,819 against a typical $913,861), its price per square foot is higher than 15% of them ($363 against a typical $441), it is bigger than 37% of them (1,880 ft² against a typical 2,220 ft²), its lot is bigger than 55% of them (0.25 ac against a typical 0.24 ac) and it is newer than 60% of them (1999 against a typical 1991). Measured against all of King County, it is worth more than 35% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 523 Union Ave Ne, Renton, WA?

The 2026 property tax bill for 523 Union Ave Ne, Renton, WA was $1,025. The county assessed it at $724,000.

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